Vintage
Anirudh seeks community insights on a Patek Philippe Ref. 3940 from a private seller, dated 1989. He raises questions about the 'squished' Calatrava deployant buckle, the absence of hallmarks for a second-series watch, and the seller's claim of a factory-fitted sapphire case back during service, prompting a detailed discussion on authenticity and historical accuracy.
The Patek Philippe Reference 3940 is a perpetual calendar wristwatch that was introduced in 1985, succeeding the Reference 3450. It is notable for its relatively slim profile and the integration of a perpetual calendar complication in a refined case. This reference became a cornerstone of Patek Philippe's complicated watch offerings for nearly two decades, establishing a design language for subsequent perpetual calendar models. It represents a significant period in the brand's modern history of complicated timepieces.
The watch features a 36mm case, typically crafted from yellow gold, rose gold, white gold, or platinum. It houses the self-winding Caliber 240 Q movement, which is known for its micro-rotor construction, contributing to the movement's thinness and allowing for a slimmer case profile. The movement provides a power reserve of approximately 48 hours. The dial is protected by a sapphire crystal, often accompanied by an interchangeable solid case back and a sapphire display back.
Reference 3940 is highly regarded by collectors for its classic proportions and the enduring appeal of its perpetual calendar display, which includes day, date, month, leap year cycle, and moon phases. It was produced in several series, with subtle variations in dial layout and typography, making early series examples particularly sought after. The reference is considered a benchmark for perpetual calendar watches and remains a significant piece for those appreciating traditional horological complications.
are on the othe side of the case (i.e. opposite the crown). They are important indicators re polishing status, of course. Maybe the seller could send you another image?
re the folding clasp - looks fake.
I know the 3940 was produced in 3 series, the first series from 1985 to 1986, the second from 1987 to 1989 and the 3rd series from 1990 to 2004. The first series is quite rare, I believe only 100 pieces were produced and had the solid case back. The 2nd series had large hallmarks so I am rather concerned that the watch you are thinking of buying is from 1989 but does not spot the large hallmarks. Also the first and second series had leaf hands. The watch in your photo does not have leaf hands so
That's not the case. Maybe you are mixing up the 3940 with the 3970 (that did have leaf hands on the first series)? Thomas
700 expl. NĀ° 770.001 to 770.700 This one is a very nice second serie.
My understanding ( please correct if I'm wrong): 3940s were made across a time period where transparent case backs were becoming a thing. People did start requesting them and PP would indulge them. So much so that the 3941 was made , same watch but display back. Then they just dropped it and in the end of production offered display back as an option for any 3940.
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